Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1999-01-08
1999-12-07
Langel, Wayne
Chemistry: fertilizers
Processes and products
Organic material-containing
71 28, 71 29, 71 30, 71 34, 71 54, 71 58, 71 60, 71 63, 71 6407, C05C 900, C05C 1100, C05D 900
Patent
active
059976012
ABSTRACT:
A method of making free-flowing moisture resistant calcium-containing particles that inhibit the water absorption characteristics of calcium products, hygroscopic and deliquescent, for example, the method comprising the steps of spraying molten soluble nitrogen-containing material onto the hygroscopic calcium-containing granules and recovering the coated granules. The core of the particle is a calcium-containing material, more particularly a soluble calcium-containing material. Moisture resistant or hydrophobic coatings are applied to the core to inhibit water absorption by the calcium-containing material. The coated particles may then be more easily shipped, stored and handled as a dry, anhydrous product. A core comprised of calcium chloride coated with urea is useful as both a soil conditioner and a fertilizer. Additional plant nutrients are mixed with either the core or the coating materials to improve fertilizing is qualities. Additional coatings of hydrophobic materials such as a paraffinic hydrocarbon or a polymeric resin increase the water resistance of the particles. A final coating of a finely divided conditioning agents such as talc or calcium carbonate can be applied to achieve a more free-flowing particle.
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D'Ambrosio Jo Katherine
Langel Wayne
TetraTechnologies, Inc.
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